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<title>Struct template default_delete</title>
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<h2><span class="refentrytitle">Struct template default_delete</span></h2>
<p>boost::movelib::default_delete</p>
</div>
<h2 class="refsynopsisdiv-title">Synopsis</h2>
<div class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../move/reference.html#doxygen.default__delete_8hpp" title="Header &lt;boost/move/default_delete.hpp&gt;">boost/move/default_delete.hpp</a>&gt;

</span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">&gt;</span> 
<span class="keyword">struct</span> <a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a> <span class="special">{</span>

  <span class="comment">// <a class="link" href="structboost_1_1movelib_1_1default__delete.html#id-1_3_23_20_8_2_1_1_3-bb">public member functions</a></span>
  <a class="link" href="structboost_1_1movelib_1_1default__delete.html#doxygen.structboost_1_1movelib_1_1default__delete_1a6f1e81f59f8cf8ecd09bea8f0710bcd3"><span class="identifier">default_delete</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="structboost_1_1movelib_1_1default__delete.html#doxygen.structboost_1_1movelib_1_1default__delete_1a4eaf2e7db84c021d0eea2190880ea587"><span class="identifier">default_delete</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a> <span class="special">&amp;</span> <a class="link" href="structboost_1_1movelib_1_1default__delete.html#doxygen.structboost_1_1movelib_1_1default__delete_1a7d4a8a979a72462d28c50bb3f1443d5c"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> U<span class="special">&gt;</span> <a class="link" href="structboost_1_1movelib_1_1default__delete.html#doxygen.structboost_1_1movelib_1_1default__delete_1ac24ef97660b54dca17b45589a3f87b78"><span class="identifier">default_delete</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a><span class="special">&lt;</span> <span class="identifier">U</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> U<span class="special">&gt;</span> 
    <a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a> <span class="special">&amp;</span> <a class="link" href="structboost_1_1movelib_1_1default__delete.html#doxygen.structboost_1_1movelib_1_1default__delete_1ade03e3a5474579b695e31573aecd67ad"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a><span class="special">&lt;</span> <span class="identifier">U</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> U<span class="special">&gt;</span> <span class="keyword">void</span> <a class="link" href="structboost_1_1movelib_1_1default__delete.html#doxygen.structboost_1_1movelib_1_1default__delete_1ab242cfa2e124d66b88bf5c1372fc6aab"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">U</span> <span class="special">*</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="structboost_1_1movelib_1_1default__delete.html#doxygen.structboost_1_1movelib_1_1default__delete_1a8093ae62eb5d618d089d5f14116a08a0"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">nullptr_t</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="id-1.3.23.20.9.4.4"></a><h2>Description</h2>
<p>The class template <code class="computeroutput"><a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a></code> serves as the default deleter (destruction policy) for the class template <code class="computeroutput"><a class="link" href="classboost_1_1movelib_1_1unique__ptr.html" title="Class template unique_ptr">unique_ptr</a></code>.</p>
<p>
</p>
<div class="refsect2">
<a name="id-1.3.23.20.9.4.4.4"></a><h3>Template Parameters</h3>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
<pre class="literallayout"><span class="keyword">typename</span> T</pre>
<p>The type to be deleted. It may be an incomplete type </p>
</li></ol></div>
</div>
<div class="refsect2">
<a name="id-1.3.23.20.9.4.4.5"></a><h3>
<a name="id-1_3_23_20_8_2_1_1_3-bb"></a><code class="computeroutput">default_delete</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><a name="doxygen.structboost_1_1movelib_1_1default__delete_1a6f1e81f59f8cf8ecd09bea8f0710bcd3"></a><span class="identifier">default_delete</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Default constructor. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="doxygen.structboost_1_1movelib_1_1default__delete_1a4eaf2e7db84c021d0eea2190880ea587"></a><span class="identifier">default_delete</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span></pre>
<p>Trivial copy constructor </p>
</li>
<li class="listitem">
<pre class="literallayout"><a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a> <span class="special">&amp;</span> <a name="doxygen.structboost_1_1movelib_1_1default__delete_1a7d4a8a979a72462d28c50bb3f1443d5c"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span></pre>
<p>Trivial assignment </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> U<span class="special">&gt;</span> 
  <a name="doxygen.structboost_1_1movelib_1_1default__delete_1ac24ef97660b54dca17b45589a3f87b78"></a><span class="identifier">default_delete</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a><span class="special">&lt;</span> <span class="identifier">U</span> <span class="special">&gt;</span> <span class="special">&amp;</span> BOOST_MOVE_DOCIGN<span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Constructs a <a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a> object from another <code class="computeroutput"><a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a><span style="color: red">&lt;underline&gt; object.&lt;/underline&gt;</span></code></p>
<p><code class="computeroutput"><span style="color: red">&lt;underline&gt;<span class="bold"><strong>Remarks</strong></span>: This constructor shall not participate in overload resolution unless:<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>If T is not an array type and U* is implicitly convertible to T*.</p></li>
<li class="listitem"><p>If T is an array type and U* is a more CV qualified pointer to remove_extent&lt;T&gt;::type. </p></li>
</ul></div>
&lt;/underline&gt;</span></code></p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> U<span class="special">&gt;</span> 
  <a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a> <span class="special">&amp;</span> <a name="doxygen.structboost_1_1movelib_1_1default__delete_1ade03e3a5474579b695e31573aecd67ad"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a><span class="special">&lt;</span> <span class="identifier">U</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Constructs a <a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a> object from another <code class="computeroutput"><a class="link" href="structboost_1_1movelib_1_1default__delete.html" title="Struct template default_delete">default_delete</a><span style="color: red">&lt;underline&gt; object.&lt;/underline&gt;</span></code></p>
<p><code class="computeroutput"><span style="color: red">&lt;underline&gt;<span class="bold"><strong>Remarks</strong></span>: This constructor shall not participate in overload resolution unless:<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>If T is not an array type and U* is implicitly convertible to T*.</p></li>
<li class="listitem"><p>If T is an array type and U* is a more CV qualified pointer to remove_extent&lt;T&gt;::type. </p></li>
</ul></div>
&lt;/underline&gt;</span></code></p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> U<span class="special">&gt;</span> <span class="keyword">void</span> <a name="doxygen.structboost_1_1movelib_1_1default__delete_1ab242cfa2e124d66b88bf5c1372fc6aab"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">U</span> <span class="special">*</span> ptr<span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: if T is not an array type, calls <code class="computeroutput">delete</code> on static_cast&lt;T*&gt;(ptr), otherwise calls <code class="computeroutput">delete[]</code> on static_cast&lt;remove_extent&lt;T&gt;::type*&gt;(ptr).</p>
<p><span class="bold"><strong>Remarks</strong></span>: If U is an incomplete type, the program is ill-formed. This operator shall not participate in overload resolution unless:</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>T is not an array type and U* is convertible to T*, OR</p></li>
<li class="listitem"><p>T is an array type, and remove_cv&lt;U&gt;::type is the same type as remove_cv&lt;remove_extent&lt;T&gt;::type&gt;::type and U* is convertible to remove_extent&lt;T&gt;::type*. </p></li>
</ul></div>
<p>
</p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="doxygen.structboost_1_1movelib_1_1default__delete_1a8093ae62eb5d618d089d5f14116a08a0"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">nullptr_t</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Same as <code class="computeroutput">(<span class="emphasis"><em>this)(static_cast&lt;element_type</em></span>&gt;(nullptr))</code>. </p>
</li>
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